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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2013.0224 Moderate: tomcat6 security update 20 February 2013 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: tomcat6 Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 5 Red Hat Enterprise Linux Server 6 Impact/Access: Cross-site Request Forgery -- Remote with User Interaction Denial of Service -- Remote/Unauthenticated Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2012-5887 CVE-2012-5886 CVE-2012-5885 CVE-2012-4534 CVE-2012-4431 CVE-2012-2733 Reference: ESB-2012.1134 ESB-2012.1056.2 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2013-0266.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: tomcat6 security update Advisory ID: RHSA-2013:0266-01 Product: JBoss Enterprise Web Server Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-0266.html Issue date: 2013-02-19 CVE Names: CVE-2012-2733 CVE-2012-4431 CVE-2012-4534 CVE-2012-5885 CVE-2012-5886 CVE-2012-5887 ===================================================================== 1. Summary: Updated tomcat6 packages that fix multiple security issues are now available for JBoss Enterprise Web Server 2.0.0 for Red Hat Enterprise Linux 5 and 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: JBoss Enterprise Web Server 2 for RHEL 5 Server - noarch JBoss Enterprise Web Server 2 for RHEL 6 Server - noarch 3. Description: Apache Tomcat is a servlet container. It was found that sending a request without a session identifier to a protected resource could bypass the Cross-Site Request Forgery (CSRF) prevention filter. A remote attacker could use this flaw to perform CSRF attacks against applications that rely on the CSRF prevention filter and do not contain internal mitigation for CSRF. (CVE-2012-4431) A flaw was found in the way Tomcat handled sendfile operations when using the HTTP NIO (Non-Blocking I/O) connector and HTTPS. A remote attacker could use this flaw to cause a denial of service (infinite loop). The HTTP NIO connector is used by default in JBoss Enterprise Web Server. The Apache Portable Runtime (APR) connector from the Tomcat Native library was not affected by this flaw. (CVE-2012-4534) Multiple weaknesses were found in the Tomcat DIGEST authentication implementation, effectively reducing the security normally provided by DIGEST authentication. A remote attacker could use these flaws to perform replay attacks in some circumstances. (CVE-2012-5885, CVE-2012-5886, CVE-2012-5887) A denial of service flaw was found in the way the Tomcat HTTP NIO connector enforced limits on the permitted size of request headers. A remote attacker could use this flaw to trigger an OutOfMemoryError by sending a specially-crafted request with very large headers. The HTTP NIO connector is used by default in JBoss Enterprise Web Server. The APR connector from the Tomcat Native library was not affected by this flaw. (CVE-2012-2733) Warning: Before applying the update, back up your existing JBoss Enterprise Web Server installation (including all applications and configuration files). Users of Tomcat should upgrade to these updated packages, which resolve these issues. Tomcat must be restarted for this update to take effect. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258 5. Bugs fixed (http://bugzilla.redhat.com/): 873664 - CVE-2012-5885 CVE-2012-5886 CVE-2012-5887 tomcat: three DIGEST authentication implementation issues 873695 - CVE-2012-2733 tomcat: HTTP NIO connector OOM DoS via a request with large headers 883636 - CVE-2012-4431 Tomcat/JBoss Web - Bypass of CSRF prevention filter 883637 - CVE-2012-4534 Tomcat - Denial Of Service when using NIO+SSL+sendfile 6. Package List: JBoss Enterprise Web Server 2 for RHEL 5 Server: Source: tomcat6-6.0.35-6_patch_06.ep6.el5.src.rpm noarch: tomcat6-6.0.35-6_patch_06.ep6.el5.noarch.rpm tomcat6-admin-webapps-6.0.35-6_patch_06.ep6.el5.noarch.rpm tomcat6-docs-webapp-6.0.35-6_patch_06.ep6.el5.noarch.rpm tomcat6-el-1.0-api-6.0.35-6_patch_06.ep6.el5.noarch.rpm tomcat6-javadoc-6.0.35-6_patch_06.ep6.el5.noarch.rpm tomcat6-jsp-2.1-api-6.0.35-6_patch_06.ep6.el5.noarch.rpm tomcat6-lib-6.0.35-6_patch_06.ep6.el5.noarch.rpm tomcat6-log4j-6.0.35-6_patch_06.ep6.el5.noarch.rpm tomcat6-servlet-2.5-api-6.0.35-6_patch_06.ep6.el5.noarch.rpm tomcat6-webapps-6.0.35-6_patch_06.ep6.el5.noarch.rpm JBoss Enterprise Web Server 2 for RHEL 6 Server: Source: tomcat6-6.0.35-29_patch_06.ep6.el6.src.rpm noarch: tomcat6-6.0.35-29_patch_06.ep6.el6.noarch.rpm tomcat6-admin-webapps-6.0.35-29_patch_06.ep6.el6.noarch.rpm tomcat6-docs-webapp-6.0.35-29_patch_06.ep6.el6.noarch.rpm tomcat6-el-1.0-api-6.0.35-29_patch_06.ep6.el6.noarch.rpm tomcat6-javadoc-6.0.35-29_patch_06.ep6.el6.noarch.rpm tomcat6-jsp-2.1-api-6.0.35-29_patch_06.ep6.el6.noarch.rpm tomcat6-lib-6.0.35-29_patch_06.ep6.el6.noarch.rpm tomcat6-log4j-6.0.35-29_patch_06.ep6.el6.noarch.rpm tomcat6-servlet-2.5-api-6.0.35-29_patch_06.ep6.el6.noarch.rpm tomcat6-webapps-6.0.35-29_patch_06.ep6.el6.noarch.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2012-2733.html https://www.redhat.com/security/data/cve/CVE-2012-4431.html https://www.redhat.com/security/data/cve/CVE-2012-4534.html https://www.redhat.com/security/data/cve/CVE-2012-5885.html https://www.redhat.com/security/data/cve/CVE-2012-5886.html https://www.redhat.com/security/data/cve/CVE-2012-5887.html https://access.redhat.com/security/updates/classification/#moderate http://tomcat.apache.org/security-6.html 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2013 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFRJA5gXlSAg2UNWIIRAv0aAKCzi0k+VkK+5+7EtoM0+N9VHydrIACfZ3O8 2UQP+qWrhV0etdXhUf0nYbA= =ryw2 - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBUSRsLu4yVqjM2NGpAQIsxg//aowHT4xpNiWfCDVj6HrmFJWAvQODSr1K l3Lpnociw2bGVhF30CKcasKadyz6xs9lQ/xDzkPjD8QBw6VLK3MAn4GRVBx38AIC +E0JtmGsQMK9527CgaOi09n4A05i/G8Uhfj2bdX0Shs5ZGhvcvBVCwQIRompgkjK TFafSof5CZMIwVzBjygsZPDTiWYdNhPYeLLrNq9qVlUk5GPICC1oqG0Z+Hx6psJz 8R+Zd1ujIqWNwC1M1QmhUW7F6lsN37aH2QiCPot4WU6rDNL7RT8winPnS29FqFwI ahYfGBohA0Z7KrgNUJTsx+nFZV0FkbMPimJa+BlZXTvyqHLJj5jIkCMWlonjhepf 47shkimpx0mxGDanvARGU+nbrzXoQvu53fR7vm24oAtIzVVONrsPhUUf/IVF8/Go 9NKbZf2aXJnXMP3M7tt18653X6RbfET/Fmu+a0j47/JSSaCm5Nv2JZMX9asXdxLr PikZ8Kctb6rG780CkBrCrOuZlSlVObFZj9LV1LxbsgJi/khWPrOcTgi4Goa/YCY3 3iGf1KMK9wtTEyp42aS3FSS8Dd4ZtiT3eH2qQ2Ze4LfD4EtWqcJAm6UzuBmoXTVJ mQ4oI1TGUjdO0o7O+P/7wxvVxndC5sz5fs6aVsWbf7hKn68rMEVU/Nl3XWoDBoU1 I62fKW13xcs= =6XP6 -----END PGP SIGNATURE-----